Cayley是否支持BoltDB后端？

huangapple
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英文:

Cayley with BoltDB backend?

问题

我是新手，正在尝试使用Cayley和BoltDB作为后端数据存储来设置一个简单的图数据库。现在我正在尝试从命令行运行Cayley。运行以下命令：

  1. cayley http --db="bolt"

会生成以下错误：

  1. panic: runtime error: invalid memory address or nil pointer dereference
  2. [signal 0xb code=0x1 addr=0x8 pc=0x2517e7]
  4. goroutine 16 [running]:
  5. runtime.panic(0x6ae9e0, 0xbc1f44)
  6.     /usr/local/go/src/pkg/runtime/panic.c:279 +0xf5
  7. github.com/boltdb/bolt.(*Bucket).Get(0x0, 0xc208000b68, 0x4, 0x8, 0x0, 0x0, 0x0)
  8.     /Users/tbrown/Development/src/github.com/boltdb/bolt/bucket.go:256 +0x57
  9. github.com/google/cayley/graph/bolt.(*QuadStore).getInt64ForKey(0xc20800eff0, 0xc208028270,     0x750ac0, 0x4, 0x0, 0xc20800e0b8, 0x0, 0x0)
  10.     /Users/tbrown/Development/src/github.com/google/cayley/graph/bolt/quadstore.go:437 +0xd9
  11. github.com/google/cayley/graph/bolt.func·009(0xc208028270, 0x0, 0x0)
  12.     /Users/tbrown/Development/src/github.com/google/cayley/graph/bolt/quadstore.go:452 +0x76
  13. github.com/boltdb/bolt.(*DB).View(0xc20807e180, 0xc2080a9a90, 0x0, 0x0)
  14.     /Users/tbrown/Development/src/github.com/boltdb/bolt/db.go:490 +0xe4
  15. github.com/google/cayley/graph/bolt.(*QuadStore).getMetadata(0xc20800eff0, 0x0, 0x0)
  16.     /Users/tbrown/Development/src/github.com/google/cayley/graph/bolt/quadstore.go:458 +0x5a
  17. github.com/google/cayley/graph/bolt.newQuadStore(0x75be50, 0xb, 0x0, 0x0, 0x0, 0x0, 0x0)
  18.     /Users/tbrown/Development/src/github.com/google/cayley/graph/bolt/quadstore.go:91 +0x226
  19. github.com/google/cayley/graph.NewQuadStore(0x7fff5fbff2b1, 0x4, 0x75be50, 0xb, 0x0, 0x0, 0x0, 0x0, 0x0)
  20.     /Users/tbrown/Development/src/github.com/google/cayley/graph/quadstore.go:174 +0x21b
  21. github.com/google/cayley/db.OpenQuadStore(0xc208048180, 0x0, 0x0, 0x0, 0x0)
  22.     /Users/tbrown/Development/src/github.com/google/cayley/db/db.go:53 +0x176
  23. github.com/google/cayley/db.Open(0xc208048180, 0x4, 0x0, 0x0)
  24.     /Users/tbrown/Development/src/github.com/google/cayley/db/db.go:40 +0x3f
  25. main.main()
  26.     /Users/tbrown/Development/src/database_comparison/cayley/src/cayley/cayley.go:234 +0x77e
  28. goroutine 19 [finalizer wait]:
  29. runtime.park(0x17a40, 0xbc8118, 0xbc63a9)
  30.     /usr/local/go/src/pkg/runtime/proc.c:1369 +0x89
  31. runtime.parkunlock(0xbc8118, 0xbc63a9)
  32.     /usr/local/go/src/pkg/runtime/proc.c:1385 +0x3b
  33. runfinq()
  34.     /usr/local/go/src/pkg/runtime/mgc0.c:2644 +0xcf
  35. runtime.goexit()
  36.     /usr/local/go/src/pkg/runtime/proc.c:1445
  38. goroutine 20 [chan receive]:
  39. github.com/barakmich/glog.(*loggingT).flushDaemon(0xbcb000)
  40.     /Users/tbrown/Development/src/github.com/barakmich/glog/glog.go:923 +0x75
  41. created by github.com/barakmich/glog.init·1
  42.     /Users/tbrown/Development/src/github.com/barakmich/glog/glog.go:408 +0x37a
  44. goroutine 17 [syscall]:
  45. runtime.goexit()
  46.     /usr/local/go/src/pkg/runtime/proc.c:1445
  48. goroutine 22 [syscall]:
  49. os/signal.loop()
  50.     /usr/local/go/src/pkg/os/signal/signal_unix.go:21 +0x1e
  51. created by os/signal.init·1
  52.     /usr/local/go/src/pkg/os/signal/signal_unix.go:27 +0x32

我觉得我可能在某个地方漏掉了一步，但是我找不到关于如何使用Cayley和Bolt的好文档。有什么建议吗？

英文:

I am new to Go and I am trying to setup a simple graph database using Cayley with BoltDB as the backend datastore. Right now I am trying to run cayley from the command line. Running this command:

  1. cayley http --db="bolt"

Generates this error:

  1. panic: runtime error: invalid memory address or nil pointer dereference
  2. [signal 0xb code=0x1 addr=0x8 pc=0x2517e7]
  4. goroutine 16 [running]:
  5. runtime.panic(0x6ae9e0, 0xbc1f44)
  6.     /usr/local/go/src/pkg/runtime/panic.c:279 +0xf5
  7. github.com/boltdb/bolt.(*Bucket).Get(0x0, 0xc208000b68, 0x4, 0x8, 0x0, 0x0, 0x0)
  8.     /Users/tbrown/Development/src/github.com/boltdb/bolt/bucket.go:256 +0x57
  9. github.com/google/cayley/graph/bolt.(*QuadStore).getInt64ForKey(0xc20800eff0, 0xc208028270,     0x750ac0, 0x4, 0x0, 0xc20800e0b8, 0x0, 0x0)
  10.     /Users/tbrown/Development/src/github.com/google/cayley/graph/bolt/quadstore.go:437 +0xd9
  11. github.com/google/cayley/graph/bolt.func·009(0xc208028270, 0x0, 0x0)
  12.     /Users/tbrown/Development/src/github.com/google/cayley/graph/bolt/quadstore.go:452 +0x76
  13. github.com/boltdb/bolt.(*DB).View(0xc20807e180, 0xc2080a9a90, 0x0, 0x0)
  14.     /Users/tbrown/Development/src/github.com/boltdb/bolt/db.go:490 +0xe4
  15. github.com/google/cayley/graph/bolt.(*QuadStore).getMetadata(0xc20800eff0, 0x0, 0x0)
  16.     /Users/tbrown/Development/src/github.com/google/cayley/graph/bolt/quadstore.go:458 +0x5a
  17. github.com/google/cayley/graph/bolt.newQuadStore(0x75be50, 0xb, 0x0, 0x0, 0x0, 0x0, 0x0)
  18.     /Users/tbrown/Development/src/github.com/google/cayley/graph/bolt/quadstore.go:91 +0x226
  19. github.com/google/cayley/graph.NewQuadStore(0x7fff5fbff2b1, 0x4, 0x75be50, 0xb, 0x0, 0x0, 0x0, 0x0, 0x0)
  20.     /Users/tbrown/Development/src/github.com/google/cayley/graph/quadstore.go:174 +0x21b
  21. github.com/google/cayley/db.OpenQuadStore(0xc208048180, 0x0, 0x0, 0x0, 0x0)
  22.     /Users/tbrown/Development/src/github.com/google/cayley/db/db.go:53 +0x176
  23. github.com/google/cayley/db.Open(0xc208048180, 0x4, 0x0, 0x0)
  24.     /Users/tbrown/Development/src/github.com/google/cayley/db/db.go:40 +0x3f
  25. main.main()
  26.     /Users/tbrown/Development/src/database_comparison/cayley/src/cayley/cayley.go:234 +0x77e
  28. goroutine 19 [finalizer wait]:
  29. runtime.park(0x17a40, 0xbc8118, 0xbc63a9)
  30.     /usr/local/go/src/pkg/runtime/proc.c:1369 +0x89
  31. runtime.parkunlock(0xbc8118, 0xbc63a9)
  32.     /usr/local/go/src/pkg/runtime/proc.c:1385 +0x3b
  33. runfinq()
  34.     /usr/local/go/src/pkg/runtime/mgc0.c:2644 +0xcf
  35. runtime.goexit()
  36.     /usr/local/go/src/pkg/runtime/proc.c:1445
  38. goroutine 20 [chan receive]:
  39. github.com/barakmich/glog.(*loggingT).flushDaemon(0xbcb000)
  40.     /Users/tbrown/Development/src/github.com/barakmich/glog/glog.go:923 +0x75
  41. created by github.com/barakmich/glog.init·1
  42.     /Users/tbrown/Development/src/github.com/barakmich/glog/glog.go:408 +0x37a
  44. goroutine 17 [syscall]:
  45. runtime.goexit()
  46.     /usr/local/go/src/pkg/runtime/proc.c:1445
  48. goroutine 22 [syscall]:
  49. os/signal.loop()
  50.     /usr/local/go/src/pkg/os/signal/signal_unix.go:21 +0x1e
  51. created by os/signal.init·1
  52.     /usr/local/go/src/pkg/os/signal/signal_unix.go:27 +0x32

I feel like I am missing a step somewhere but I can't find any good documentation on using Cayley with Bolt. Any suggestions?

答案1

得分: 4

至少需要安装Bolt。

  1. go get github.com/boltdb/bolt/...

并且需要提供持久的单个Bolt数据库文件的db_path。

  1. cayley init --db=bolt --dbpath=/tmp/someBoltDB
英文:

At least bolt must be installed.

  1. go get github.com/boltdb/bolt/...

and db_path to the persistent single Bolt database file must be provided

  1. cayley init --db=bolt --dbpath=/tmp/someBoltDB

huangapple
  • 本文由 发表于 2014年12月29日 23:50:32
  • 转载请务必保留本文链接：https://go.coder-hub.com/27691957.html
  • backend
  • boltdb
  • cayley
  • datastore
  • go
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